Details

LordAro states that these ignores belong to the IDE configuration, but since they were already ignored for the same old things (as Microsoft decided to move *.suo content to a folder tree structure, in fact disabling the .vs folder from system registry made the IDE create a *.suo file), I added them for the .vs folder too.

By the way, if one wants to use the old *.suo file, here's the registry key to change:
[HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\14.0_Config\FeatureFlags\Solution\WorkingFolders\LegacySUOMode] "Value"=dword:00000001